Please cite the following reference in any work that makes use of VESPA:
Paquot, M., Larsson, T., Hasselgård, H., Ebeling, S. O., De Meyere, D., Valentin, L., Laso, N. J., Verdaguer, I. & van Vuuren, S. (2022). The Varieties of English for Specific Purposes dAtabase (VESPA): Towards a multi-L1 and multi-register learner corpus of disciplinary writing. Research in Corpus Linguistics, 10(2), 1-15. https://doi.org/10.32714/ricl.10.02.02